Guy did you know that just by tapping once on the mic that you use for voice message you can also make a video message try it you'll see just tap once on the mic icon and it will change to video icon and then you can long-press to make a video messag...
You should try running a diagnostic test multiple times on the suspicious features, and then you'll be able to determine if the problem is minor or majorAfter that, you can then take it to an official store for a check provided the problem is major
Surely you can still return the device if you're not satisfiedI mean, in most stores, you can return the device or exchange it within 48 hours of purchase if you experience an inconvenience
But it's your fault for not reviewing the device before purchasing itI mean you literally went for a downgrade and you expected more, from A51 you should have went for at least the A34 for similar features or even the A54 for much more